671252796 has 72 divisors (see below), whose sum is σ = 1758941184. Its totient is φ = 215615520.

The previous prime is 671252749. The next prime is 671252797. The reversal of 671252796 is 697252176.

It is a super-2 number, since 2×671252796² = 901160632275635232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671252797) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292365 + ... + 294651.

Almost surely, 2^671252796 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671252796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (879470592).

671252796 is an abundant number, since it is smaller than the sum of its proper divisors (1087688388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671252796 is a wasteful number, since it uses less digits than its factorization.

671252796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591 (or 2586 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 671252796 is about 25908.5467751474. The cubic root of 671252796 is about 875.5790652951.

The spelling of 671252796 in words is "six hundred seventy-one million, two hundred fifty-two thousand, seven hundred ninety-six".